The triumph of the Romans was indeed sullied by their treatment of the captive king, whom they hung on a gibbet without the knowledge of their indignant general. This disgraceful act of cruelty which might be imputed to the fury of the troops, was followed by the deliberate murder of Withicab, the son of Vadomair; a German prince, of a weak and sickly constitution, but of a daring and formidable spirit.
Edward Gibbon (1854). “The history of the decline and fall of the Roman empire”, p.259